Hand-actuated, multiple-function switch unit, particularly for e

Details Hand-actuated, multiple-function switch unit, particularly for e Hand-actuated, multiple-function switch unit, particularly for e

1977-06-02

1978-10-03

Moorhead, Davis T.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200303, 200293, H01H 1308, H01H 2104, H01H 1504, H01H 902

Patent

active

041186150

ABSTRACT:
To provide for simple assembly of a multiple-function switch unit in modular form to provide (a) a basic ON-OFF function and, selectively, at least one of the functions (b) speed control; (c) overload protection; (d) forward-reverse; (e) RF interference suppression, a basic housing unit is provided in which the ON-OFF switch is enclosed, and operating control units having the respectively selected functions are provided, the switch housing unit and the operating control units being respectively formed with interengaging projection-and-recess arrangements, typically dovetail joints, to assemble and secure the separate control units to the basic switch housing and to attach these units to the switch housing and to each other.

REFERENCES:
patent: 2487011 (1949-11-01), Wilhide
patent: 2869043 (1959-01-01), Locher
patent: 2921147 (1960-01-01), Hutt
patent: 3761663 (1973-09-01), Brown
patent: 4045637 (1977-08-01), Mongeau
patent: 4057520 (1977-11-01), Schwartz

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